In this video, we attempt to stain the XPEL Ultimate paint protection film with a permanent marker. This is important since yellowing, common to many brands of paint protection film, is caused by staining from environmental contaminants such as road oils, diesel smoke, pollen and pollution. The significance of the permanent marker is that it represents the most difficult known stain to erradicate. To top it off, we added a raw egg baked on in 100 degree weather.
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